[folivier]

Congrats on the new coach. Too bad it's not a Newell, we'll let you hang around with us anyway
If the refrigerator is propane then it's like my '93 was with 2 8Ds. 1000 amp hours would be great for boon docking. You may only use 100-200 amp hours/day if that much. If that's the case then you may want to rethink your solar panels. You should only have to replace the amp hours you're using each day + a bit more for cloudy days. But verify this yourself.
If you're taking the time to re-wire a lot of the 12v and 120v systems it would be nice to have the capability of running an air conditioner for a few hours.
Using Victron for the charger/inverter and solar controller should make a nice system and should be compatible with LiFePO4s.
Yes, Balqon is frustrating to deal with. It would be nice if they would at least appoint a retailer to handle small sales. It would almost be worth paying a small premium for better customer service.
If you have the time try and come to the rally in June. You can see my system and maybe get some ideas. A lot of great people will be there.